MB15F03SL Fujitsu Media Devices, MB15F03SL Datasheet - Page 8
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MB15F03SL
Manufacturer Part Number
MB15F03SL
Description
Dual Serial Input PLL Frequency Synthesizer
Manufacturer
Fujitsu Media Devices
Datasheet
1.MB15F03SL.pdf
(25 pages)
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8
MB15F03SL
The divide ratio can be calculated using the following equation:
f
Serial Data Input
Serial data is entered using three pins, Data pin, Clock pin, and LE pin. Programmable dividers of IF/RF-PLL
sections, programmable reference dividers of IF/RF-PLL sections are controlled individually.
Serial data of binary data is entered through Data pin.
On rising edge of Clock, one bit of serial data is transferred into the shift register. When the LE signal is taken high,
the data stored in the shift register is transferred to one of latch of them depending upon the control bit data setting.
Table.1 Control Bit
Shift Register Configuration
VCO
LSB
FUNCTIONAL DESCRIPTION
C
N
= [(M
1
1
f
M
N
A
f
R
CN1
VCO
OSC
Programmable Reference Counter
H
H
L
L
C
N
2
2
CN1,2
R1 to R14
T1, 2
CS
X
NOTE: Data input with MSB first.
Control bit
N) + A]
: Output frequency of external voltage controlled oscillator (VCO)
: Preset divide ratio of dual modulus prescaler (8or 16 for IF-PLL, 64 or 128 for RF-PLL)
: Preset divide ratio of binary 11-bit programmable counter (3 to 2,047)
: Preset divide ratio of binary 7-bit swallow counter (0
: Reference oscillation frequency
: Preset divide ratio of binary 14-bit programmable reference counter (3 to 16,383)
T
3
1
4
T
2
f
OSC
R
5
1
: Control bit
: Divide ratio setting bit for the programmable reference counter (5 to 16,383)[Table. 2]
: Test purpose bit
: Charge pump currnet select bit
: Dummy bits (Set “0” or “1”)
CN2
H
H
L
L
R
6
2
R (A < N)
R
7
3
The programmable reference counter for the IF-PLL
The programmable reference counter for the RF-PLL
The programmable counter and the swallow counter for the IF-PLL
The programmable counter and the swallow counter for the RF-PLL
R
8
4
R
9
5
10 11 12 13 14 15 16 17 18 19 20 21 22 23
R
6
R
7
Data Flow
R
8
R
9
Destination of serial data
10
R
11
R
A
12
127)
R
13
R
14
R
C
S
X
X
[Table. 1]
[Table. 3]
[Table. 9]
X
MSB
X